nRF Connect for Mobile vs Watermark One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
nRF Connect for Mobile
This app is a versatile tool for scanning, exploring, and communicating with Bluetooth Low Energy devices. It also enables your device to act as a peripheral and supports firmware updates for compatible devices.
- Scan and discover Bluetooth LE peripherals
- Communicate with Bluetooth LE devices
- Advertise as a Bluetooth LE peripheral
- Update compatible device firmware (DFU)
- Filter scanned peripherals
- Live RSSI chart
- Log BLE function calls
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nRF Connect is a powerful generic tool that allows you to scan and explore your Bluetooth Low Energy (henceforth Bluetooth LE, also called Bluetooth Version 4.0+ of the Bluetooth specification) devices and communicate with them. nRF Connect also allows your iOS device to advertise as a peripheral, with full support of many of Bluetooth SIG adopted profiles. Additionally, nRF Connect supports Nordic Semiconductor’s Device Firmware Update profile (DFU) capabilities, allowing you to update compatible peripherals! + Features: • Supports DFU on all Nordic Semiconducto-powered devices. • Supports Nordic Thingy™ from Nordic Semiconductor. • Scan and discover nearby Bluetooth LE peripherals. • Filter Scanned Peripherals by Name, Manufacturer, Services (Advertised & Connected) and RSSI Level. • Parsing Multiple Formats of Bluetooth LE Advertisement Data. • Live RSSI Chart of Scanned Bluetooth LE Peripherals. • Complete iPad Support, including Multi-Tasking and Mouse Support as of 13.4. • Logs: Including BLE Function calls, and Export Function as CSV and Text. • Privacy-Oriented: Full-Disclosure of Scanned Data, Advertised Data, and User-Performed Actions held by nRF Connect. • Connecting to Any Connectable Bluetooth LE Smart Device. • Discovery of Services, Characteristics and Descriptors. • Read and Write Characteristics and Descriptors. • Enable and Disable Notifications and Indications. • Advertising as a Bluetooth LE Peripheral. • Setting up a Bluetooth LE (Peripheral) Server and Notifying/Indicating back to connected Central(s). • Low-Fat: nRF Connect for iOS is Very Small, so You Can Always Keep Us With You! >= Requirements: • iOS 16.0 and above. - Notes: nRF Connect also works with our Development Kits, which you may acquire online here: https://www.nordicsemi.com/eng/buy-online
Watermark One
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Add a watermark to an image or PDF without opening a complicated editor. Watermark One is designed for iPhone and iPad. Choose one image or PDF from Photos or Files, add a text or image watermark, preview the result, then share or save your export. The focused workflow makes it easy to finish wherever you are. KEY FEATURES • Text and image watermarks Enter a copyright notice, signature, brand name, or other custom text. You can also use a logo, signature, or another image as your watermark. • Flexible appearance controls Adjust the font, weight, color, size, opacity, rotation, and margins, then choose from nine convenient positions. • Single or tiled layouts Place one watermark on the canvas or repeat it across the entire image or page. Fine-tune horizontal and vertical spacing for tiled layouts. • Live image and PDF preview Check the result before exporting. For PDFs, move through individual pages to verify watermark placement. • Flexible PDF page selection Apply a watermark to every page, or enter page numbers and ranges to process only the pages you need. • Multiple image export formats Keep the original format or export as JPEG, PNG, HEIC, TIFF, GIF, BMP, JPEG 2000, or AVIF. Adjust output quality for supported lossy formats. • Mobile-friendly export tools Send the finished file with the system share sheet, or save image exports to Photos. Export history stays on the current device so you can preview, share, or delete previous results. IDEAL FOR • Signing photography, illustrations, and design previews • Adding copyright notices, logos, or brand marks to product images • Marking contracts, reference material, and other PDF documents • Adding an ownership overlay before sharing a file PRIVACY FIRST Your image, PDF, and watermark processing happens locally on your iPhone or iPad. No account is required, your files are never uploaded, and the app does not collect or track personal data. Protect and label your images and PDFs wherever you work.
Screenshots
Verdict
The clearest difference is in-app purchases: nRF Connect for Mobile at none against Watermark One's 3. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Watermark One sells 3 one-off in-app purchases. nRF Connect for Mobile asks for nothing beyond the download.
| Parameter | nRF Connect for Mobile | Watermark One |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (479 ratings) — better | — |
| Positive reviews | 70.7% of reviews | — |
| Number of ratings | 479 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 15 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Nordic Semiconductor ASA | 群英 廖 |
Bugs and requests
nRF Connect for Mobile
Reported bugs
4 issues- Can't read data from Bluetooth device
- Tries to ask for Bluetooth connection when Bluetooth is off. Asks to connect to devices when Bluetooth is off. Who knows what this app is doing in the background without permission?! What ever it is , it ain't good
- Tapping "tabs" doesn't work (nothing changes in the UI). To get some response from tapping UI controls typically requires (a) launching nRF Connect, (b) switching to another app, (c) switching back to nRF Connect. I've tried uninstalling and re-downloading. Same result. This used to be the bee's knees of BLE tools but it's only worth 1 star at the moment (v2.7.11).
- Cant go past the initial announcement. The app is unresponsive to the taps.
Requested features
4 requests- Where's the mac addresses
- Max rssi limit
- Log view
- We need macros in iOS version
Watermark One
Not enough reviews yet to summarise bugs or requests.
In-app purchases
nRF Connect for Mobile
No in-app purchases
Watermark One
- 1 Export$0.99
- 10 Exports$2.99
- Lifetime Unlock$5.99
Questions
Is nRF Connect for Mobile free?
Is Watermark One free?
Do nRF Connect for Mobile or Watermark One have ads?
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